Dell E6420 video problem.

Last week my laptop frozen in two different days without any type of error and it was been necessary to reboot through the power-on button.
Ok, I thought that there were some problems with the new kernel and the video drivers.
It's ok, go ahead.
I did a backup with Remastersys (god bless the authors) and when I reboot the laptop, unity worked at 2D mode.

What???
I thought that It was a problem with virtualbox (VMWARE), no way....I purge it, I followed all guides to re-install mesa, intel and any type of proprietary drivers (nvidia included)...but at the end there was not been a solution to return back to unity 3D!!!
In the purge and reinstall steps, something went wrong and my ubuntu is died

Well, I decided to re-install it with the remastersys backup. At the boot I noticed that also the live-cd runned to 2D (so it was an old problem, before the backup).
I installed the backup and in the update manager I selected the precise-proposed updates.
In the repository there was the 3.2.0.33 version of the kernel, I installed and unity has returned back to 3D

Great!!! But It has worked for only 3 days until the compat wireless driver installation.
In fact, this morning I installed the driver for the first time, I uninstalled them and finally I re-installed them....at the second reboot, unity has returned to work in 2D mode!!!

At the end...I reinstalled (for the second time) the remastersys backup.

What does it happened?
How can I solve this problem for the next times?
Now I am scared to install and do anything!!

Re: Dell E6420 video problem.

Hi!

I got exactly the same problem of unity working in 2D after installing a 2012-10-30 release of compat-wireless. My computer is a Dell Inspiron 14z. Apparently it's quite a new problem having issues with video after installing compat-wireless since I couldn't find anything really from the forums.